The organ that is responsible for the secretion of cocoons in the oligochaetes is known as the Cilitellum.
Oligochaetes belong to the subclass of phylum Annelida and they have segmented, long, and tubular bodies.
This subclass comprises many freshwaters, terrestrial and aquatic worms. Their size varies and can range from a few millimeters to ten feet.
These organisms lack special legs and heads but due to the presence of peristalsis, they can get around very well.
For example, earthworms are members of the class Oligochaetes and belong to the phylum Annelida.
If you need to learn more about organs click here:
https://brainly.com/question/1126526
#SPJ4
